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Rozhen Night Plan

Up to ten targets, one night: each gets its good/marginal/poor windows (darkness × altitude × Moon × clouds, as on the single-target page), then the night is handed out five minutes at a time to whichever target is best — with hysteresis, so you get a few solid blocks of at least 30 minutes, not a flicker. Targets that never win a block are listed with the reason.

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Night of Thursday, 02 January 2042 · astronomical night 18:42 → 06:08 (11.44 h) · Moon 87% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.1M31 18:10–18:45: quality 0.2M31 18:45–00:00: quality 0.4M31 00:00–00:40: quality 0.3M31 00:40–01:00: quality 0.2observe M31 21:00–22:25M42M42 19:25–20:05: quality 0.2M42 20:05–23:15: quality 0.3M42 23:15–02:15: quality 0.4M42 02:15–02:50: quality 0.3M42 02:50–03:00: quality 0.2observe M42 23:50–01:15observe M42 02:30–02:35M45M45 17:35–18:10: quality 0.1M45 18:10–18:45: quality 0.2M45 18:45–19:30: quality 0.4M45 19:30–23:10: quality 0.3M45 23:10–02:15: quality 0.4M45 02:15–02:45: quality 0.3M45 02:45–03:00: quality 0.2observe M45 01:15–02:30NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:45: quality 0.3NGC 7000 18:45–19:40: quality 0.6NGC 7000 19:40–20:35: quality 0.5NGC 7000 20:35–21:00: quality 0.4NGC 7000 21:00–21:25: quality 0.3observe NGC 7000 19:35–21:00V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:45: quality 0.3V1057 Cyg 18:45–19:40: quality 0.6V1057 Cyg 19:40–20:35: quality 0.5V1057 Cyg 20:35–21:00: quality 0.4V1057 Cyg 21:00–21:25: quality 0.3observe V1057 Cyg 18:10–19:35M33M33 17:35–18:10: quality 0.1M33 18:10–18:45: quality 0.2M33 18:45–19:55: quality 0.4M33 19:55–00:40: quality 0.3M33 00:40–01:10: quality 0.2observe M33 22:25–23:50scheduleV1057 CygNGC 7000M31M33M42M4518:0020:0022:0000:0002:0004:0006:00

Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight.  Download: schedule CSV · targets CSV · JSON

Schedule

localtargethoursmean quality
17:00–18:10 — nothing worth pointing at — 1.17
18:10–19:35 V1057 Cyg 1.42 0.47
19:35–21:00 NGC 7000 1.42 0.49
21:00–22:25 M31 1.42 0.39
22:25–23:50 M33 1.42 0.32
23:50–01:15 M42 1.42 0.38
01:15–02:30 M45 1.25 0.37
02:30–02:35 M42 0.08 0.31
02:35–07:50 — nothing worth pointing at — 5.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 28 unknown 18:45–00:20 (marginal) 89.7° at 18:15 43.7° 1.42
M42 Great Orion Nebula 25 unknown 20:30–02:35 (marginal) 42.9° at 23:10 37.6° 1.5
M45 Seven Sisters 28 unknown 18:45–02:30 (marginal) 72.5° at 21:20 2.1° 1.25
NGC 7000 North America Nebula 23 unknown 18:45–18:50 (good) 87.2° at 14:30 83.4° 1.42
V1057 Cyg 23 unknown 18:45–18:50 (good) 87.2° at 14:30 83.4° 1.42
M33 Triangulum Pinwheel 21 unknown 18:45–00:20 (marginal) 79.2° at 19:05 31.9° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2042-01-02"

targets: names or RA Dec, separated by commas, semicolons or newlines, at most ten. The response carries targets[] (score, verdict, best_window, windows, transit, moon_separation), schedule[] (blocks with target, start/end in UTC and local, hours, mean_quality; target: null is idle time), unscheduled[] with a why, forecast_source, warnings[]. Missing targets → 400 {"error", "code": "targets_missing"}; an unreadable date → 400 {"error", "code": "invalid_date"}.